Duck dung contains a lot of caffeine, tea polyphenols and other substances. Drinking too much can easily affect the quality of sleep and lead to insomnia. People with weak gastrointestinal and absorptive capacity will drink too much tea, which will affect gastrointestinal digestion. Secondly, people with constipation are forbidden to drink duck excrement fragrant tea, so as not to affect their physical recovery.

Duck dung incense originated in Pingkengtou village. Initially, a tea farmer introduced it from Wu Qiong and planted it in a "duck excrement soil" (actually yellow soil) tea garden. After drinking this kind of tea, the local people applauded and praised it. They all asked about its name and smell.

Duck dung incense actually has a very elegant and unique name, called Yinhuaxiang. This kind of tea comes from Phoenix Mountain in Guangdong Province and belongs to Phoenix Dan Cong, so it is also oolong tea.

According to legend, this kind of tea tree mainly grows in the yellow soil of duck excrement soil, which provides a lot of nutrients and nutrition for tea trees, so tea trees are flourishing and have high quality.

Tea leaves are delicate and petite, and they look like duck excrement. The aroma of tea soup is even more fragrant, which attracts local people to linger and ask tea farmers repeatedly. Tea farmers are afraid that others will know the secret of tea trees. In order to prevent the tea tree from being remembered by thieves, it was lied as "duck excrement fragrance".